Explicitly log redundant coverpoints during normalisation.

[Pawan Kumar Sanjaya]

The normalisation functions used to abstract representations of coverpoints can potentially produce duplicate coverpoints. However, the coverpoints are stored in dictionaries; hence only unique coverpoints are retained. It is desirable to identify and optimise these to reduce the time taken to normalise a CGF. In order to do this, the duplicate coverpoints need to be printed out in the generated logs (enabled by a switch).